Instead of defining things in and out, we can say: let's consider the clothes you put on to be part of a conversation. So doing, what do we learn about the clothes you put on? What do we learn about fashion? What do we learn about conversations?

We can have conversations in any medium we like, give or take some technical challenges. We can play games in any medium we like too, give or take the same. What are the technical challenges of designing games that play in the medium of conversation? How do you seize the advantages of that medium, and how do you design around its disadvantages?